which statement best explains the function of an e - mail subject line?\nthe subject line is a friendly…

which statement best explains the function of an e - mail subject line?\nthe subject line is a friendly greeting.\nthe subject line is a clever saying or logo.\nthe subject line states the purpose or topic.\nthe subject line establishes common ground.
Answer
Brief Explanations:
The subject - line of an email is meant to quickly inform the recipient about what the email is about, which is stating the purpose or topic. A friendly greeting is in the body of the email, a clever saying or logo is not its main function, and establishing common ground is also not its primary role.
Answer:
The subject line states the purpose or topic.